You probably reduced a bit too drastically. There's only the .P value in the File dimension. There also seem to be no files that end in a .P extension. Your demo file doesn't demonstrate the problem to me tbh. If I modify a button to select in field Full Path the values ending in .n and click it then three files get selected, along with three customers. If I then select one of those three customers I end up with 1 file found and 11 files unselected. Those numbers match the values in your text boxes. The two numbers always add up to 12.